I think keeping your darker base but going for a warmer brown shade would be very flattering on you. Make sure not to goo too light as this may tend to blend in too well with your skin tone. As for the cut, I would trim a few inches off to refresh the ends and ass lots of fun face framing layers as well as long layers throughout the perimeter. This will really help to reduce the amount of weight in your hair and help to give it more style. You would even be able to pull off a whispy full bang just be sure not to cut too much as to not overwhelm your face or features. The key here is to reduce bulk and add movement!